Finding the Fourth Proportional to 921,346.84, 1,271,459.87 and 513,439.75
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Solution
The fourth proportional to 921,346.84, 1,271,459.87 and 513,439.75 is: 708,547.54
Step by Step Solution
- Step 1: Write the proportion equation
921,346.84 : 1,271,459.87 = 513,439.75 : x - Step 2: Convert to fraction form
921,346.84/1,271,459.87 = 513,439.75/x - Step 3: Cross multiply
921,346.84x = 1,271,459.87 × 513,439.75 - Step 4: Simplify right side
921,346.84x = 652,818,037,787.83 - Step 5: Solve for x
x = 652,818,037,787.83/921,346.84 - Step 6: Final answer
x = 708,547.54
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.